什么是Objective-C中的NSBundle和mainBundle？ [英] What is NSBundle and mainBundle in Objective-C?

问题描述

关于iOS应用程序上的Objective-C，我在Apple开发人员网站上阅读了一些示例程序，发现几乎所有应用程序都包含一个名为' NSBundle '和' mainBundle '，我真的不理解这个词的意思。那是什么？

Regarding Objective-C on iOS application, I read some sample program in the Apple developer website and I found that almost all of the applications contains a word called 'NSBundle' and 'mainBundle', and I really don't understand the meaning of this word. What is that?

推荐答案

捆绑软件是用于在Mac OS X上打包软件的结构。应用程序，框架和插件是所有不同种类的捆绑包捆绑包可能包含可执行代码，资源，头文件和其他内容（包括其他捆绑包）。

A bundle is a structure used for packaging software on Mac OS X. Applications, frameworks and plug-ins are all different kinds of bundles. Bundles may contain executable code, resources, header files and other stuff (including other bundles) if you so wish.

捆绑包被实现为具有定义结构的目录树。应用程序，框架和插件在树的结构上各有不同。但是，对于Finder，捆绑包看起来像单个文件。

Bundles are implemented as directory trees with a defined structure. Applications, frameworks and plug-ins each have their own variation on the structure of the tree. However, to the Finder, bundles look like single files.

主捆绑包只是正在运行的应用程序的捆绑包。因此，例如，Apple邮件程序的主要捆绑包是/Applications/Mail.app。

The main bundle is simply the bundle of the application that is running. So, for instance, the main bundle of the Apple mail program is /Applications/Mail.app.

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